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All of these Kelpies are "brown" (b/b) (called "red" in
the Kelpie breed).  The dog in the middle has a saddle
pattern, the other two have tan points.  The bitch in the
first picture is a lighter brown than the second one;
the second one is lighter than the last one.  *NOTICE:
all dogs have brown noses, eye rims and lips, which
indicates the dog is genetically brown.
These are all diluted brown (called
fawn in the Kelpie breed) with tan
points.  The pup in the middle is a
more "silvery" color, rather than
dull brown.  Their nose, eye rims
and lips are a rosey brown color.
BLUE (has a gray         FAWN                        BLUE
nose, eye rims and
 all with tan points
BLUE with
tan points
FAWN with
tan points
BLUE with tan
All of these Kelpies are true RED (e/e), called "cream" in the
Kelpie breed.  They are different shades of red due to modifiers,
like from the chinchilla gene.

Genetically, an e/e red dog can be either black, diluted black
("blue"), brown, or diluted brown ("fawn or lilac").  The best
way to tell the genetic color of the dog is to look at the nose.

If the nose, eye rims and lips are:
black, the dog is genetically a black dog (the color will be
from a dead wheat color to a fox red).  
brown, the dog is genetically a brown dog (the color will
tend to be like the genetically black dog).   
diluted black (blue), then dog is genetically a blue dog
(the dilution gene will lighten the e/e red to pale yellow,
biscuit, butter cream or even almost white color).
rosey-brown or a brownish pink (fawn or lilac), the dog is
genetically a fawn/lilac dog (the dilution gene [on the D
locus] will lighten the color to a pale yellow, almost white).

The dog in the first and third picture is genetically a black
dog, because she has a black nose, eye rims and lips.  The dog
in the second picture is genetically a brown dog, because her
nose, eye rims and lips are brown.  The dog in the last, or
fourth picture, is genetically a chocolate or diluted brown (fawn
or lilac).
From left to right:
Black -
diluted black (called blue) -
brown (called red) -
diluted brown (called fawn)